How do you install a plenum mounting bracket?
To install the plenum mounting bracket, align the M8 bolts with washers and metal clamping bars through the four corner holes. Push the bracket upward into the square roof opening and tighten the bolts evenly until the bracket is secure and fully seated.
Securing the Plenum Mounting Bracket
Overlap the M8 bolts (#7) with washers (#9) and metal clamping bars (#8), inserting them through the four corner holes of the plenum mounting bracket.
From inside the RV, push the bracket upward so it fits securely into the square roof opening.
Start tightening the bolts by hand to prevent cross-threading.
Use a torque wrench to tighten the M8 bolts evenly to 7 N·m, ensuring the plenum bracket connects firmly with the outdoor unit.
Finally, verify that the bracket is fully seated and flush within the opening before proceeding.
Corky Lorenz
November 5, 2025